Alloy



UNITED STATES PATENT OFFICE.

- COLUMBUS n. s'rovnrn, cr'nnxmo'ron', xnn'rccxir.

LLOY.

No Drawing.

To all whom it may concern:

Be it known that I, COLUMBUS l). STOVALL, a citizen of the United Statesfresiding at Lexington, in the county of Fayette and State of Kentucky, hwe invented certain new and useful improvements in Alloys, of which the following is a specification.

This invention reintes to certain improve- I merits in alloys and has relation. more psrticulerly to an alloy especially designed and adapted for use in connection with dentistry,

Plate K.) 72 grains. Nickel 133; grains. I Conger 16% gra ns; Platinum 2 grams.

Specification of Letters Patent.

Patented May 3, 1921.

Application filed June 7, 1926, Serial No. 387,218.

The nickel and copper, when combined.

with the remaining constituents, result in a finished product of a good golden color and an elastic, rigid, hard, high fusing, tenacious metah'zind in practice the fused mass is preferably made into plates rolled to the desired thickness.

It has been fully established in practice that my improved alloy is substantially-nonoxidizable and is particularly adapted for use in connection with dentistry as the alloy 7 irill not discolor and is not affected by ordinary acids. It has also been fully established that annealing does not affect the elasticity 0r tenacity of my improved alloy. -1 claim An alloy comprising gold, nickel, copper and platinum in the proportions described. In testimony whereof I hereunto afiix my signature.

COLUMBUS Djs'rovALL. 

